The AirTAC GFR600-20ALJC2TK AirTAC Filter Regulator NPT3/4 Low-Pressure is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/4" ports, a automatic drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR600-20ALJC2TK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This size-600 unit is specified with a 3/4 in NPT port, the standard 40 um filter element, an automatic drain that discharges collected condensate without manual attention, and a low-pressure regulator type for circuits that run below standard working ranges. It is fitted with a round pressure gauge reading in psi and a reverse (check) valve, and the aluminium alloy bowl suits this largest frame. No mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of drain type, 40 um or 5 um filtration, gauge style and scale, and PT, G or NPT threads. Flow figures are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application before ordering.
| Model | GFR600-20ALJC2TK AirTAC Filter Regulator NPT3/4 Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT3/4" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Automatic drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Fitted — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR600 | G-series filter regulator, 600 body — sets the port range. |
|---|---|
| 20 | Port size PT3/4". This body offers 20 = PT3/4", 25 = PT1". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR600 · PT3/4" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-20 (two-unit set) |
Installed at the 3/4 in main drop feeding a cartoning and wrapping line, it cleans water and scale from the plant air and holds a reduced, stable supply pressure to the line's valves and cylinders, with automatic drain handling condensate between shifts.
On the fixture circuit of a CNC machining cell, it filters incoming air to protect clamping cylinders and valves, and the low-pressure regulator type sets the reduced holding pressure the clamps need, with the psi gauge giving operators a visible setpoint.
On a test bench or laboratory air header, it delivers cleaned, regulated air at reduced pressure to instruments and pneumatic controls, with the check valve holding the downstream setting if supply pressure is interrupted.
Start with the port step: size 600 carries a 3/4 in port, the largest in the GFR range, so match it to your main line and the flow your circuit needs. Choose the drain to suit access: automatic (this unit) suits unmanned or hard-to-reach installations, manual suits attended checks, and differential-pressure is the default. The 40 um element is standard; specify grade W for 5 um where finer particulate removal matters. Gauge style and scale are selectable - this unit carries a round gauge in psi. Thread is NPT here; PT is the standard and G (BSPP) is also a catalogue option. Bracket: this configuration omits the mounting bracket.
Flow for this family is published as curves, not a single rated figure, so send us your application details and we will confirm sizing against the datasheet before you order.
Quick checklist
The aluminium-alloy bowl on the GFR600 suits harsher environments than a PC bowl. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR family as curves rather than a single rated figure, so we do not quote one number. Tell us your line size and required flow and we will confirm sizing against the datasheet on request before you order.
The code A sets an automatic drain, which ejects collected condensate from the bowl without manual attention - useful where the unit is mounted out of reach. The code K fits a reverse (check) valve, which holds the regulated downstream pressure if upstream supply is lost.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.